期刊
MATERIALS RESEARCH BULLETIN
卷 99, 期 -, 页码 29-36出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2017.08.054
关键词
TiO2; Graphene; Interfacial chemical bond; Photocatalyst
资金
- U.S. Department of Agriculture [5040-12630-004-00D]
- NSF RSP EPSCoR program (the National Science Foundation) [1355438]
- NSF-CHE-MRI [1338072]
- NSF REG AMP
- RSP EPSCoR program (the National Science Foundation) [1355438]
In this study, a hydrothermal-prepared TiO2-RG nanocomposites series exhibited excellent photocatalytic activities, of which the results can be largely influenced by a Ti-O-C interfacial chemical bond between TiO2 nanoparticles and RG nanosheets. A stirring TiO2-RG sample was prepared as contrast analysis using the same wet process except for heating. The characteristics of the composites were tested by X-ray diffraction (XRD), Raman, FT-IR, Differential scanning calorimetry (DSC), Thermogravimetric analysis (TGA) and X-ray photo-electron spectroscopy (XPS) analysis. The photocatalytic properties were verified by UV-vis diffuse reflectance spectra (DRS) testing as well as degrading Rhodamine B (RhB). Our research results show that the better Ti-O-C interfacial chemical bond was formed, the narrower band gap of the nanocomposite was then obtained. The best hydrothermal synthesizing temperature was found out as 120 degrees C. The TiO2-RG nanocomposite, as inexpensive , nontoxic and highly photo-catalytically active, may let it have a potential use in various photo-catalytic applications.
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